A Finite Element Model of Warm Metal Powder Compaction Process : Application of Finite Element Method (FEM) in Modelling the Forming of Metal Powder at above Ambient Temperature

M. M. Rahman

ISBN 10: 3845403977 / ISBN 13: 9783845403977

Published by LAP LAMBERT Academic Publishing, 2011

About this Item

nach der Bestellung gedruckt Neuware - Printed after ordering - The development of finite element model for the simulation of a complete warm forming process of powder sintered component is presented here. The material constitutive laws were derived based on a continuum mechanics approach. The process of green compact generation was represented by a large displacement based finite element formulation. Three constitutive relations, i.e., Mohr-Coulomb, Elliptical Cap, and combination of these two yield models were used to describe the deformation behaviour of the powder mass during compaction. However, an Elliptical Cap model was shown to be the most appropriate. A plasticity theory of friction was employed in the treatment of the powder-tooling interface. The Roscoe-Burland criterion was used to describe the densification and dimensional change of the compact during the sintering. The staggered-incremental-iterative solution strategy was established to solve the non-linearity in the systems of equations. The numerical simulation results were validated through experimentation where a good agreement was observed.

Seller Inventory # 9783845403977

Bibliographic Details

• Title: A Finite Element Model of Warm Metal Powder Compaction Process : Application of Finite Element Method (FEM) in Modelling the Forming of Metal Powder at above Ambient Temperature
• Publisher: LAP LAMBERT Academic Publishing
• Publication Date: 2011
• Language: English
• ISBN 10: 3845403977
• ISBN 13: 9783845403977
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 220W x 150H x 12D millimeters 220 millimeters width by 150 millimeters height by 12 millimeters depth
• Weight: 310 grams

About this title

Synopsis

The development of finite element model for the simulation of a complete warm forming process of powder sintered component is presented here. The material constitutive laws were derived based on a continuum mechanics approach. The process of green compact generation was represented by a large displacement based finite element formulation. Three constitutive relations, i.e., Mohr-Coulomb, Elliptical Cap, and combination of these two yield models were used to describe the deformation behaviour of the powder mass during compaction. However, an Elliptical Cap model was shown to be the most appropriate. A plasticity theory of friction was employed in the treatment of the powder-tooling interface. The Roscoe-Burland criterion was used to describe the densification and dimensional change of the compact during the sintering. The staggered-incremental-iterative solution strategy was established to solve the non-linearity in the systems of equations. The numerical simulation results were validated through experimentation where a good agreement was observed.

About the Author

Dr. Md. Mujibur Rahman is an Assoc. Prof. at the Dept. of Mech. Engineering, Universiti Tenaga Nasional-Malaysia. He successfully completed his first degree with Cum Laude from the Dept. of Petroleum Engineering, Islamic University of Riau-Indonesia. He later obtained his MSc and PhD degrees in Mechanical & Materials Engineering from UKM-Malaysia.